(Visual FoxPro) Export Digital Certificate's Public Key

The ExportPublicKey method can be called to get a certificate's public key. It can then be saved to any of a number of formats: (1) OpenSSL DER, (2) OpenSSL PEM, (3) RSA DER, (4) XML.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loCert
LOCAL lnSuccess
LOCAL loPubkey

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Cert')
loCert = CreateObject('Chilkat.Cert')

* LoadFromFile will load virtually any certificate format file.
* It will auto-recognize the format and load appropiately.
lnSuccess = loCert.LoadFromFile("/Users/chilkat/testData/cer/chilkat.cer")
IF (lnSuccess <> 1) THEN
    ? loCert.LastErrorText
    RELEASE loCert
    CANCEL
ENDIF

* Get the public key:

loPubkey = loCert.ExportPublicKey()
IF (loCert.LastMethodSuccess = 0) THEN
    ? loCert.LastErrorText
    RELEASE loCert
    CANCEL
ENDIF

* Save to various formats:
lnSuccess = loPubkey.SaveDerFile(0,"/Users/chilkat/testData/pubkeys/chilkat_pkcs8.der")
IF (lnSuccess <> 1) THEN
    ? loPubkey.LastErrorText
    RELEASE loPubkey
    RELEASE loCert
    CANCEL
ENDIF

lnSuccess = loPubkey.SavePemFile(0,"/Users/chilkat/testData/pubkeys/chilkat.pem")
IF (lnSuccess <> 1) THEN
    ? loPubkey.LastErrorText
    RELEASE loPubkey
    RELEASE loCert
    CANCEL
ENDIF

lnSuccess = loPubkey.SaveDerFile(1,"/Users/chilkat/testData/pubkeys/chilkat_pkcs1.der")
IF (lnSuccess <> 1) THEN
    ? loPubkey.LastErrorText
    RELEASE loPubkey
    RELEASE loCert
    CANCEL
ENDIF

lnSuccess = loPubkey.SaveXmlFile("/Users/chilkat/testData/pubkeys/chilkat.xml")
IF (lnSuccess <> 1) THEN
    ? loPubkey.LastErrorText
    RELEASE loPubkey
    RELEASE loCert
    CANCEL
ENDIF

RELEASE loPubkey
? "Public key exported to all file formats."

RELEASE loCert